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1 from utils import L,W,E |
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2 import config |
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3 |
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4 class Fridge(object): |
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5 def __init__(self): |
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6 self.setup_gpio() |
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7 self.wort_valid_clock = 0 |
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8 |
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9 def setup_gpio(self): |
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10 fn = '%s/direction' % config.FRIDGE_GPIO |
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11 f = open(fn, 'w') |
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12 f.write('low') |
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13 f.close() |
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14 # .off() shouldn't do anything, but tests that "value" is writable |
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15 self.off() |
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16 |
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17 def turn(self, value): |
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18 fn = '%s/value' % config.FRIDGE_GPIO |
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19 f = open(fn, 'w') |
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20 if value: |
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21 f.write('1') |
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22 else: |
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23 f.write('0') |
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24 f.close() |
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25 |
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26 def on(self): |
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27 self.turn(1) |
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28 |
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29 def off(self): |
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30 self.turn(0) |
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31 |
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32 def do(self): |
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33 wort, fridge, ambient = server.current_temps() |
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34 |
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35 if server.uptime() < config.FRIDGE_DELAY: |
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36 L("fridge skipping, too early") |
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37 return |
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38 |
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39 # handle broken wort sensor |
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40 if wort is not None: |
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41 self.wort_valid_clock = server.now() |
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42 else: |
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43 W("Invalid wort sensor") |
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44 invalid_time = server.now() - self.wort_valid_clock |
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45 if invalid_time < config.FRIDGE_WORT_INVALID_TIME: |
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46 W("Has only been invalid for %d, waiting" % invalid_time) |
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47 return |
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48 |
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49 if fridge is None: |
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50 W("Invalid fridge sensor") |
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51 |
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52 |
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53 |
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54 |
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55 |
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56 |
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57 |
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58 def run(self, server): |
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59 self.server = server |
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60 |
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61 while True: |
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62 self.do() |
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63 gevent.sleep(config.FRIDGE_SLEEP) |
